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THE OFFICIAL ANSWER
The official answer is that you can not remove the VNC Icon from the system
tray... and don't bother asking for this feature to be added because the
author has taken a very strong position on this (and I agree with him) and
to my
You will have to modify the source, to prevent this message from appearing,
as the WinVNC checks the return code of the ServiceInstall function, from
within the code.
I had the same problem, and this was the only way around it. There is also
the same messages and checks for removing the WinVNC